National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The twenty genotypes along with four checks in Indian mustard (Brassica juncea L. Czern & Coss.) were studied for genetic diversity with respect to seed yield and thirteen related traits under normal condition (NS) and saline/alkaline condition (SS). D2 analysis classified the twenty genotypes of Indian mustard into five diverse clusters in both the conditions. In normal condition, plant height, secondary branches per plant, siliquae on main raceme, seeds per siliqua, 1000 seed weight, biological yield per plant and seed yield per plant were the major contributors for genetic diversity among the genotypes, whereas, in saline/alkaline condition, days to 50 % flowering, days to maturity, plant height, seeds per siliqua and harvest index were the major contributors for genetic diversity among the genotypes. The maximum inter cluster distance was observed between cluster IV and V in NS and in SS, between cluster II and IV. Character viz., harvest index followed by siliquae on main raceme and length of main raceme in NS whereas in SS, plant height followed by siliquae on main raceme contributed maximum towards divergence. In (NS), maximum inter cluster D2 values were observed between cluster IV and V (2156.013); while in (SS), maximum inter cluster distance was observed between cluster II and IV (1750.460) indicating wider genetic diversity between the genotypes in these clusters. Hybridization among the genotypes separated by high cluster distance will result in most heterotic crosses.
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